You have installed the NAVIGON App on your Android device. After starting the app you get the error message "An error occurred".
Possible reasons are:- The NAVIGON app has not the needed  permissions- A self-made change in your Android system- An upgrade from Android 6.x to 7.x- The SD card with the installed NAVIGON app was reused on the new device.


=> Activate all needed permissions of the app in  Settings > Apps > Permissions

Then you have to delete all the data before you start the app again. Therefore you have to go into Settings > Apps > NAVIGON App > Storage and then on Delete Data.